It is called magnetic resonance yet physical process produced when the atoms of a material absorb Energy when subjected to certain frequencies of a magnetic field.
The notion is also used to name the technique of the medicine which, by making use of this process, allows obtain internal images of the human body. From these images, doctors are able to detect various disorders and make a diagnosis.
Magnetic resonance imaging, in this sense, is considered a non-invasive technique, since it does not require the introduction of tools or elements in the body nor does it have consequences for the patient. The information obtained through magnetic resonance imaging is converted into images in a computer (computer), allowing the professional to observe, in this way, the interior of the organism.
What does this technique is to appeal, in general, to the hydrogen nuclei that are part of the water that is in the body. From the magnetization of these nuclei and their alignment by magnetic fields, a scanner allows these signals to be detected and then converted into images of the inside of the body.
The MRI machine, therefore, does not use radiation as it does with imaging studies. computed tomography. In MRI, a tunnel-shaped magnet is used: the patient enters the tunnel where, by means of radio waves, the atoms are acted upon by manipulating their magnetic position. This work is registered by a scanner and analyzed by a computer to generate the images. It should be noted that the process does not cause any pain in the person.
In addition to all these data, it is also important to know other relevant aspects of the aforementioned MRIs such as these:
-Thanks to the fact that they allow to know more in depth that with ultrasound or X-rays certain parts of the body become a great tool when it comes to being able to carry out deeper and more exhaustive diagnoses of the circulatory system, the brain or even the eyes, for example.
-In the same way, it is important to know that the images obtained with the aforementioned resonance can be converted, when required, into three-dimensional photographs.
-They are very useful in terms of being able to discover what problems are affecting soft tissues such as cartilage, tendons or even ligaments.
In order to carry out an MRI on a person and that the images obtained can be absolutely those expected to make a diagnosis, it is important that the person does not carry any type of metallic object, because they can cause white spots on the film in question and generate fields strong magnets, and that it does not move under any circumstances.
Staying still is somewhat complicated when it comes to babies and children, so it may happen that the professionals who perform the aforementioned test may determine the need to sedate them and thus remain asleep during it. Of course, to do so, they will consult their parents who do not have any type of allergy and they will ask them that the minors do not have any food or drink during the hours prior to the MRI.